Rare case of spindle cell haemangioma of oral cavity

  1. Kiran Jot 1,
  2. Smita Manchanda 2,
  3. Ajoy Roychoudhury 3 and
  4. Deepika Mishra 1
  1. 1 Department of Oral Pathology and Microbiology, Center for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
  2. 2 Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi, India
  3. 3 Oral and Maxillofacial Surgery, Center for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
  1. Correspondence to Dr Deepika Mishra; deepika1904@gmail.com

Publication history

Accepted:03 Jun 2022
First published:20 Jun 2022
Online issue publication:20 Jun 2022

Case reports

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Abstract

Spindle cell haemangioma (SCH) is a slow growing, benign vascular lesion with a preference for the distal extremities. Its occurrence in the oral cavity is rare. Clinically, it presents as solitary or multiple subcutaneous nodules, therefore, it could be considered in the differential diagnosis of benign soft tissue tumours. Microscopically it mimics some malignant vascular tumours and it is necessary to differentiate it from other malignant vascular lesions. We report a case of SCH in anterior mandibular region of a young male in his 20s. Although it is a benign lesion, the reported case displayed extensive areas of muscle infiltration and necrosis. After studying the radiographic findings and considering the absence of cellular atypia, a final diagnosis of SCH was made. Literature survey suggests that this is the eleventh case of SCH reported in oral cavity.

Background

Spindle cell haemangioma (SCH) is a benign vascular tumour that usually occurs in the subcutaneous tissue of distal extremities.1 Previously, it was considered as haemangioendothelioma by Weiss and Enzinger and shared the features of benign haemangioma and malignant angiosarcoma in its behaviour.2 In 1996, WHO renamed it as spindle cell haemangioma. Now, according to the classification International Society for the Study of Vascular Anomalies (2018), it has been included under the category of benign vascular tumours.3

SCH can occur either sporadically or in association with syndromic disorders (10% of cases) such as Klippel-Trenaunay-Weber, Maffucci, epithelioid haemangioendothelioma, early onset varicose veins, lymphoedema and superficial cutaneous lymphatic malformations.1 4 It mainly affects the distal extremities, but may occur at other sites such as the chest wall, genital area, head and neck region. It has been rarely reported in oral cavity. Microscopically, it is characterised by presence of cavernous vascular channels and spindle cell proliferation.4

Here, we describe a case of SCH in mandibular anterior region of a young male. To the best of our knowledge, this is the eleventh case of SCH reported in the oral cavity.

Case presentation

A male in his 20s reported to our clinic with a primary symptom of swelling in the chin region noticed over 2 years. On intraoral examination, firm, well-defined, compressible, irreducible, non-fluctuant, painless and non-pulsatile swelling of size 3×3 cm was palpated in mandibular labial vestibule.

Investigations

On radiographic examination, MR angiography revealed lobulated hyperintense lesion showing postcontrast enhancement in the subcutaneous plane of the submental region in midline. Lesion was extending to the right side with multiple tortuous vascular channels, suggestive of a vascular malformation. MRI (T2-weighted sequences) revealed mildly hyperintense lesion, which led to scalloping and thinning of outer cortex of mandible. The appearance was suggestive of a soft tissue tumour, possibly of vascular origin (figure 1A,B). Ultrasonography showed well-defined echogenic lesion measuring approximately 3.6×1.9 cm nestled in the subcutaneous plane of the right side of chin. It displayed a bunch of vessels with predominantly low resistance arterial flow evident on doppler imaging (figure 1C,D). Based on clinical and radiological information, a series of differential diagnosis were considered including haemangioma/vascular tumour, peripheral giant cell lesion, pyogenic granuloma, peripheral ossifying fibroma and other mesenchymal tumours such as neurofibroma and schwannoma.

Figure 1

(A) MRI face-axial T2-weighted image shows a lobulated lesion in the subcutaneous plane of the chin, slightly to the right of the midline. Lesion is of intermediate signal intensity with few internal flow voids (arrow). The posterior margin is not well defined and is causing scalloping and mild thinning of the cortex of the underlying bone (open arrow). (B) Postcontrast T1-weighted image shows the moderate postcontrast enhancement (arrow). (C) Sagittal ultrasonography image reveals a heterogenous, solid lesion in the subcutaneous plane. The mass is predominantly echogenic with linear anechoic areas (arrow) which show colour flow on Doppler evaluation. (D) Power Doppler evaluation shows the markedly increased vascularity (arrow) within the lesion.

The macroscopic examination of the excised lesion showed dark brown tissue and was firm in consistency (figure 2). On light microscopy study, the lesional tissue was composed of variably sized blood vessels, budding capillaries and highly cellular areas. The tumour cells were seen infiltrating the muscle and adipose tissue. Cellular areas consisted of spindle shaped tumour cells with vesicular to hyperchromatic nuclei and a few regions showed epithelioid tumour cells with enlarged vesicular nuclei and eosinophilic cytoplasm. The multiple, thin walled blood filled spaces lined by endothelial cells were seen, engorged with red blood cells and eosinophilic material. Stroma showed mild chronic inflammatory cell infiltrate interspersed with areas of necrosis and haemorrhage. Tumour cells were immunopositive for CD31 and CD34 (figure 3). Based on the radiological and histopathological features, the final diagnosis of spindle cell haemangioma was tendered.

Figure 2

Gross specimen. (A) Well circumscribed brownish firm tissues. (B) Cut surface was smooth and light brown in colour. Focal dark brown necrotic areas (yellow arrow) were also appreciated.

Figure 3

(A) Photomicrograph showed variably sized blood vessels, budding capillaries and highly cellular areas (black arrow) with tumour cells infiltrating the muscle. (B) Dilated blood vessels (black arrow) present adjacent to cellular areas of spindle cells. (C) Tumour cells showed infiltration into adipose tissue (black arrow). (D) Cellular areas were consisting of spindle shaped tumour cells and variably sized blood vessels. (E and F) Tumour cells were immunopositive for CD34 and CD31, respectively.

Treatment

After the discussion with multidisciplinary team and considering the high vascularity of the lesion and young age, the lesion was removed surgically followed by electrocauterisation to avoid inadvertent bleeding under general anaesthesia. The overlying mucosa was excised. The borders of the lesion were demarcated in a meticulous manner by dissecting around the lesion followed by its complete removal. As the posterior margin was not easily discernible, the periosteum attached to the lesion was removed in this region.

Since the recurrence rate of head and neck SCH is low as compared with cutaneous SCH,5 6 surgical excision was performed, which is considered as the standard treatment. Follow-up at 8 months revealed no recurrence of the lesion.

Discussion

Oral pathologists may be unfamiliar with the histopathological features of SCH in view of the rarity of its occurrence in the oral cavity. SCH is a slow growing tumour; presenting as dermal or subcutaneous nodules and mainly affects the distal extremities. Superficial lesions appear bluish while the deeper lesions appear skin coloured due to the difference in the thickness of skin cover over the lesion. SCH mostly occur in middle-aged patients but may appear at any age1 4 7 (table 1)

Table 1

Review of literature showing spindle cell haemangioma of oral cavity since 1995–2021

S. No. Author(s) Age (years)/sex Site Duration Size of tumour (cm) Immunohistochemistry Associated syndrome
EMA, epithelial membrane antigen; F, female; M, male; N/A, not available; SMA, smooth muscle actin.
1 Tosios et al8 12/F Mandibular buccal fold N/A 1 Vimentin, factor Vlll-associated antigen N/A
2 Ide et al11 55/M Palate 3 months 1.2 Factor VIII-related antigen, CD34, CD31, vimentin, SMA N/A
3 Sheehan et al7 44/M Buccal mucosa N/A 1 CD31 and CD34 N/A
4 Tosios et al4 29/F Upper lip 1 year 1×0.7 Factor VIII, CD34, SMA and Ki-67,
CD68-focal positive. Oestrogen receptor-negative		 N/A
5 Cai et al9 34/F Lower lip 2 years 2×2×1 Vimentin, CD34, CD31, lymphatic endothelial cell marker D2-40 and α-SMA.
S-100 protein, keratin (AE1/AE3) and CK19-negative		 Maffucci syndrome
6 Chavva et al13 33/M Below tongue 8 months 1×1.5 CD34 and CD31 N/A
7 French et al1 52/F Dorsum of tongue 6 months 2 CD31 N/A
8 Murakami et al6 2018 41/F Upper lip 5 years 3×2 CD34, CD31, factor VIII, SMA and WT-1
S100 protein, AE1/AE3, D2-40 and EMA-negative		 N/A
9 Saikrishna et al5 10/M Maxillary buccal vestibular fold 2 weeks 2.5×1.5 CD31 N/A
10 Panda et al10 32/M Lower lip N/A 2.5×1.5×1 CD31 N/A
11 Our case 25/M Mandibular labial vestibule 2 years 3×3 CD 31, CD34 N/A

Ethics statements

Patient consent for publication

Footnotes

  • Contributors DM did conception and design of the case, gave final approval and is the guarantor of manuscript. KJ, AR, SM, DM performed acquisition of data (laboratory or clinical/literature search), analysis and interpretation of data collected and drafting of article and/or critical revision.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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